An introduction to the Legacy Control System is here.
https://www.lionel.com/lcs/index.html

Using the Legacy remote, you will need additional items to control switches, motorized accessories and lighting.

A detailed diagram of what items are needed to control various parts of a layout is here.
http://www.lionel.com/lcs/resources/LCS-Single-Sheet-Diagram-2014b.pdf

The Legacy Command set is the basis of the system:
http://www.lionel.com/products/990-legacy-command-set-6-14295/

Additional info: https://www.lionel.com/lcs/WhatYouNeed/index.html

The ASC2 module:https://www.lionel.com/lcs/LCSproducts/ASC2/index.html

The AMC2 module:https://www.lionel.com/lcs/LCSproducts/AMC2/index.html

The BPC2 module:https://www.lionel.com/lcs/LCSproducts/BPC2/index.html


I do not believe the LionChief/LionChief+ systems allow you to control any accessories, only the locomotives so equipped.


Larry